2 * This file holds Hub protocol constants and data structures that are
3 * defined in chapter 11 (Hub Specification) of the USB 2.0 specification.
5 * It is used/shared between the USB core, the HCDs and couple of other USB
10 #define __LINUX_CH11_H
12 #include <linux/types.h> /* __u8 etc */
14 /* See USB 3.1 spec Table 10-5 */
15 #define USB_SS_MAXPORTS 15
21 #define USB_RT_HUB (USB_TYPE_CLASS | USB_RECIP_DEVICE)
22 #define USB_RT_PORT (USB_TYPE_CLASS | USB_RECIP_OTHER)
26 * See USB 2.0 spec Table 11-16
28 #define HUB_CLEAR_TT_BUFFER 8
29 #define HUB_RESET_TT 9
30 #define HUB_GET_TT_STATE 10
31 #define HUB_STOP_TT 11
32 #define HUB_SET_DEPTH 12
35 * Hub class additional requests defined by USB 3.0 spec
36 * See USB 3.0 spec Table 10-6
38 #define HUB_SET_DEPTH 12
39 #define HUB_GET_PORT_ERR_COUNT 13
42 * Hub Class feature numbers
43 * See USB 2.0 spec Table 11-17
45 #define C_HUB_LOCAL_POWER 0
46 #define C_HUB_OVER_CURRENT 1
49 * Port feature numbers
50 * See USB 2.0 spec Table 11-17
52 #define USB_PORT_FEAT_CONNECTION 0
53 #define USB_PORT_FEAT_ENABLE 1
54 #define USB_PORT_FEAT_SUSPEND 2 /* L2 suspend */
55 #define USB_PORT_FEAT_OVER_CURRENT 3
56 #define USB_PORT_FEAT_RESET 4
57 #define USB_PORT_FEAT_L1 5 /* L1 suspend */
58 #define USB_PORT_FEAT_POWER 8
59 #define USB_PORT_FEAT_LOWSPEED 9 /* Should never be used */
60 #define USB_PORT_FEAT_C_CONNECTION 16
61 #define USB_PORT_FEAT_C_ENABLE 17
62 #define USB_PORT_FEAT_C_SUSPEND 18
63 #define USB_PORT_FEAT_C_OVER_CURRENT 19
64 #define USB_PORT_FEAT_C_RESET 20
65 #define USB_PORT_FEAT_TEST 21
66 #define USB_PORT_FEAT_INDICATOR 22
67 #define USB_PORT_FEAT_C_PORT_L1 23
70 * Port feature selectors added by USB 3.0 spec.
71 * See USB 3.0 spec Table 10-7
73 #define USB_PORT_FEAT_LINK_STATE 5
74 #define USB_PORT_FEAT_U1_TIMEOUT 23
75 #define USB_PORT_FEAT_U2_TIMEOUT 24
76 #define USB_PORT_FEAT_C_PORT_LINK_STATE 25
77 #define USB_PORT_FEAT_C_PORT_CONFIG_ERROR 26
78 #define USB_PORT_FEAT_REMOTE_WAKE_MASK 27
79 #define USB_PORT_FEAT_BH_PORT_RESET 28
80 #define USB_PORT_FEAT_C_BH_PORT_RESET 29
81 #define USB_PORT_FEAT_FORCE_LINKPM_ACCEPT 30
84 * Hub Status and Hub Change results
85 * See USB 2.0 spec Table 11-19 and Table 11-20
87 struct usb_port_status {
90 } __attribute__ ((packed));
93 * wPortStatus bit field
94 * See USB 2.0 spec Table 11-21
96 #define USB_PORT_STAT_CONNECTION 0x0001
97 #define USB_PORT_STAT_ENABLE 0x0002
98 #define USB_PORT_STAT_SUSPEND 0x0004
99 #define USB_PORT_STAT_OVERCURRENT 0x0008
100 #define USB_PORT_STAT_RESET 0x0010
101 #define USB_PORT_STAT_L1 0x0020
102 /* bits 6 to 7 are reserved */
103 #define USB_PORT_STAT_POWER 0x0100
104 #define USB_PORT_STAT_LOW_SPEED 0x0200
105 #define USB_PORT_STAT_HIGH_SPEED 0x0400
106 #define USB_PORT_STAT_TEST 0x0800
107 #define USB_PORT_STAT_INDICATOR 0x1000
108 /* bits 13 to 15 are reserved */
111 * Additions to wPortStatus bit field from USB 3.0
112 * See USB 3.0 spec Table 10-10
114 #define USB_PORT_STAT_LINK_STATE 0x01e0
115 #define USB_SS_PORT_STAT_POWER 0x0200
116 #define USB_SS_PORT_STAT_SPEED 0x1c00
117 #define USB_PORT_STAT_SPEED_5GBPS 0x0000
118 /* Valid only if port is enabled */
119 /* Bits that are the same from USB 2.0 */
120 #define USB_SS_PORT_STAT_MASK (USB_PORT_STAT_CONNECTION | \
121 USB_PORT_STAT_ENABLE | \
122 USB_PORT_STAT_OVERCURRENT | \
126 * Definitions for PORT_LINK_STATE values
127 * (bits 5-8) in wPortStatus
129 #define USB_SS_PORT_LS_U0 0x0000
130 #define USB_SS_PORT_LS_U1 0x0020
131 #define USB_SS_PORT_LS_U2 0x0040
132 #define USB_SS_PORT_LS_U3 0x0060
133 #define USB_SS_PORT_LS_SS_DISABLED 0x0080
134 #define USB_SS_PORT_LS_RX_DETECT 0x00a0
135 #define USB_SS_PORT_LS_SS_INACTIVE 0x00c0
136 #define USB_SS_PORT_LS_POLLING 0x00e0
137 #define USB_SS_PORT_LS_RECOVERY 0x0100
138 #define USB_SS_PORT_LS_HOT_RESET 0x0120
139 #define USB_SS_PORT_LS_COMP_MOD 0x0140
140 #define USB_SS_PORT_LS_LOOPBACK 0x0160
143 * wPortChange bit field
144 * See USB 2.0 spec Table 11-22 and USB 2.0 LPM ECN Table-4.10
145 * Bits 0 to 5 shown, bits 6 to 15 are reserved
147 #define USB_PORT_STAT_C_CONNECTION 0x0001
148 #define USB_PORT_STAT_C_ENABLE 0x0002
149 #define USB_PORT_STAT_C_SUSPEND 0x0004
150 #define USB_PORT_STAT_C_OVERCURRENT 0x0008
151 #define USB_PORT_STAT_C_RESET 0x0010
152 #define USB_PORT_STAT_C_L1 0x0020
154 * USB 3.0 wPortChange bit fields
155 * See USB 3.0 spec Table 10-11
157 #define USB_PORT_STAT_C_BH_RESET 0x0020
158 #define USB_PORT_STAT_C_LINK_STATE 0x0040
159 #define USB_PORT_STAT_C_CONFIG_ERROR 0x0080
162 * wHubCharacteristics (masks)
163 * See USB 2.0 spec Table 11-13, offset 3
165 #define HUB_CHAR_LPSM 0x0003 /* D1 .. D0 */
166 #define HUB_CHAR_COMPOUND 0x0004 /* D2 */
167 #define HUB_CHAR_OCPM 0x0018 /* D4 .. D3 */
168 #define HUB_CHAR_TTTT 0x0060 /* D6 .. D5 */
169 #define HUB_CHAR_PORTIND 0x0080 /* D7 */
171 struct usb_hub_status {
174 } __attribute__ ((packed));
177 * Hub Status & Hub Change bit masks
178 * See USB 2.0 spec Table 11-19 and Table 11-20
179 * Bits 0 and 1 for wHubStatus and wHubChange
180 * Bits 2 to 15 are reserved for both
182 #define HUB_STATUS_LOCAL_POWER 0x0001
183 #define HUB_STATUS_OVERCURRENT 0x0002
184 #define HUB_CHANGE_LOCAL_POWER 0x0001
185 #define HUB_CHANGE_OVERCURRENT 0x0002
190 * See USB 2.0 spec Table 11-13
193 #define USB_DT_HUB (USB_TYPE_CLASS | 0x09)
194 #define USB_DT_SS_HUB (USB_TYPE_CLASS | 0x0a)
195 #define USB_DT_HUB_NONVAR_SIZE 7
196 #define USB_DT_SS_HUB_SIZE 12
198 struct usb_hub_descriptor {
200 __u8 bDescriptorType;
202 __le16 wHubCharacteristics;
204 __u8 bHubContrCurrent;
206 /* 2.0 and 3.0 hubs differ here */
209 /* add 1 bit for hub status change; round to bytes */
210 __u8 DeviceRemovable[(USB_MAXCHILDREN + 1 + 7) / 8];
211 __u8 PortPwrCtrlMask[(USB_MAXCHILDREN + 1 + 7) / 8];
212 } __attribute__ ((packed)) hs;
217 __u16 DeviceRemovable;
218 } __attribute__ ((packed)) ss;
220 } __attribute__ ((packed));
222 /* port indicator status selectors, tables 11-7 and 11-25 */
223 #define HUB_LED_AUTO 0
224 #define HUB_LED_AMBER 1
225 #define HUB_LED_GREEN 2
226 #define HUB_LED_OFF 3
231 /* software blinks for attention: software, hardware, reserved */
232 INDICATOR_GREEN_BLINK, INDICATOR_GREEN_BLINK_OFF,
233 INDICATOR_AMBER_BLINK, INDICATOR_AMBER_BLINK_OFF,
234 INDICATOR_ALT_BLINK, INDICATOR_ALT_BLINK_OFF
235 } __attribute__ ((packed));
237 /* Transaction Translator Think Times, in bits */
238 #define HUB_TTTT_8_BITS 0x00
239 #define HUB_TTTT_16_BITS 0x20
240 #define HUB_TTTT_24_BITS 0x40
241 #define HUB_TTTT_32_BITS 0x60
243 #endif /* __LINUX_CH11_H */